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Published in Rhodora, in 1954, in volume 56, issue 664, pages 65-70

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Published in Rhodora, in 1960, in volume 62, issue 739, pages 199-201

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Published in Annals of the Missouri Botanical Garden, in 1972, in volume 59, pages 474

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Published in Novon, in 1993, in volume 3, pages 96-98

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Published in Annals of the Missouri Botanical Garden, in 1957, in volume 44, pages 77-119

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Published in Journal of The Botanical Research Institute of Texas, in 2010, in volume 4, issue 1, pages 75-91

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Published in Phytologia, in 1972, in volume 23, pages 248-249

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Published in Annals of the Missouri Botanical Garden, in 2011, in volume 98, issue 1, pages 28-36

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Published in Rhodora, in 1966, in volume 68, issue 773, pages 41-49

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Published in Phytologia, in 1978, in volume 40, pages 379-380

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Published in Novon, in 2007, in volume 17, pages 452-453

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Published in Novon, in 2005, in volume 15, pages 146-155

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Published in Novon, in 1997, in volume 7, pages 367-372

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Published in Novon, in 2005, in volume 15, pages 429-437

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Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1852, pages 1-3

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Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1857, pages 1-2

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Published in Cryptogamie. Algologie, in 1991, in volume 12, issue 3, pages 213-230

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Published in Novon, in 2007, in volume 17, pages 447-451

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Published in Novon, in 2005, in volume 15, pages 393-404

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Published in Zeitschrift für Säugetierkunde, in 1940, in volume 15, pages 180-223

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Published in Cryptogamie. Algologie, in 1980, in volume 1, issue 1, pages 75-78

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Published in Cryptogamie. Algologie, in 1982, in volume 3, issue 1, pages 83-87

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Published in Cryptogamie. Algologie, in 1980, in volume 1, issue 4, pages 355-356

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Published in Proceedings of the California Academy of Sciences, in 2009, in volume 60, issue 8, pages 85-88

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Published in Novon, in 1996, in volume 6, pages 375-384

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Published in Cryptogamie. Algologie, in 1983, in volume 4, issue 3-4, pages 233-242

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Published in Occasional Papers Museum of Texas Tech University, in 2001, in volume 206, pages 1-11

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Published in Revue Suisse De Zoologie, in 1989, in volume 96, pages 841-862

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Published in Cryptogamie. Algologie, in 1994, in volume 15, issue 1, pages 81-83

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Published in The Flowering Plants of Africa, in 1948, in volume 27, pages 1-2

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Published in The Coleopterists Bulletin, in 1950, in volume 4, issue 3, pages 44-46

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Published in The Coleopterists Bulletin, in 1958, in volume 12, issue 3/4, pages 58

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Published in The Coleopterists Bulletin, in 1949, in volume 3, issue 4, pages 63-64

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Published in Cryptogamie. Algologie, in 1984, in volume 5, issue 2-3, pages 85-108

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